全面掌握Python JSON库函数与方法学会JSON数据处理

import json

# JSON数据
json_data = '{"name": "Alice", "age": 30, "city": "New York"}'

# 解析JSON
parsed_data = json.loads(json_data)
print(parsed_data)

# 字典转换为JSON
data = {'name': 'Bob', 'age': 25, 'city': 'San Francisco'}
json_data = json.dumps(data)
print(json_data)

# JSON转换为字典
parsed_data = json.loads(json_data)
print(parsed_data)

# 美化输出
data = {'name': 'Bob', 'age': 25, 'city': 'San Francisco'}
json_data = json.dumps(data, indent=4, sort_keys=True)
print(json_data)

# 写入JSON文件
data = {'name': 'Bob', 'age': 25, 'city': 'San Francisco'}
with open('data.json', 'w') as file:
    json.dump(data, file)

# 读取JSON文件
with open('data.json', 'r') as file:
    loaded_data = json.load(file)
    print(loaded_data)

json_data = '{"name": "Alice", "age": 30, "city": "New York"'

try:
    parsed_data = json.loads(json_data)
    print(parsed_data)
except json.JSONDecodeError as e:
    print("JSON 解析错误:", e)

class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age

def custom_encoder(obj):
    if isinstance(obj, Person):
        return {'name': obj.name, 'age': obj.age}
    raise TypeError('Object of type Person is not JSON serializable')

person = Person('Alice', 30)
json_data = json.dumps(person, default=custom_encoder)
print(json_data)

import json

data = {'name': 'John', 'age': 30, 'city': 'New York'}

# 将Python对象序列化为JSON并写入文件
with open('data.json', 'w') as file:
    json.dump(data, file)

import json

# 从文件中读取JSON并解码为Python对象
with open('data.json', 'r') as file:
    loaded_data = json.load(file)
    print(loaded_data)

import json

# 可用的编码器相关常量
print(json.encoder.FLOAT_REPR)
print(json.encoder.INFINITY)
print(json.encoder.encode_basestring_ascii('example'))
# 等等